node/test/parallel/test-event-emitter-max-list...

25 lines
487 B
JavaScript

'use strict';
const common = require('../common');
var assert = require('assert');
var events = require('events');
var e = new events.EventEmitter();
e.on('maxListeners', common.mustCall(function() {}));
// Should not corrupt the 'maxListeners' queue.
e.setMaxListeners(42);
assert.throws(function() {
e.setMaxListeners(NaN);
});
assert.throws(function() {
e.setMaxListeners(-1);
});
assert.throws(function() {
e.setMaxListeners('and even this');
});
e.emit('maxListeners');